Chop all of the strawberries in to approximately 2cm chunks. You don't have to be specific with this, as they will be mashed a little later on.
3 cups Strawberries
Add the chopped strawberries to your saucepan and cook on a medium heat for 5 minutes, until very juicy and fragrant. Stir regularly to ensure none stick to the bottom of the pan. The strawberries will seem quite watery but don't worry about this, the chia seeds will be soaking up that yummy fruit juices in a few minutes.
Add the maple syrup, lemon juice and vanilla, then stir well.
Using the back of a wooden spoon, or a potato masher. Mash/squish the strawberry mixture as much or as little as you like. The more you mash it, the smoother your jam will be.
Add the chia seeds and stir well until everything has mixed together thoroughly.
2 tbsps Chia Seeds
Turn the hob heat to low, and cook for 5 minutes, stirring frequently.
Turn the hob off and remove the saucepan from the heat.
Leave to cool. The jam will thicken as it cools, resulting in the perfect consistency.
Once the jam has cooled, transfer to an airtight jar and store in the fridge.
Notes
Before adding in the chia seeds have a quick taste of your jam - If you prefer it sweeter, add more maple syrup a tablespoon at a time, until you get the level of sweetness that you like.